Weighted Average Calculator
Calculate a weighted average from up to five values, each with its own weight or importance.
What a weighted average is
A weighted average gives some values more influence over the final result than others, based on an assigned weight — unlike a plain average where every value counts equally. It’s commonly used for grades (weighted by credit hours or assignment importance), portfolio returns, and survey scoring.
The formula
Weighted Average = Σ(value × weight) / Σ(weight). Each value is multiplied by its weight, those products are summed, and the total is divided by the sum of all the weights.
Enter up to five value/weight pairs. Any pair left with a weight of 0 is automatically excluded from the calculation, so you only need to fill in as many rows as you actually have data for. This tool is for general math and educational purposes.